Sash-fastener



UNITED STATES l PATENT rricfu.V

LEWIS F. CALDWELL, OF PHILADELPHIA, PENNSYLVANIA.

SASH-FASTEN ER'l SPECIFICATION forming part of Letters Patent No.621,600, dated March 21, 1899.

Application tiled June 6, 1898. Serial No.` 682,700. (No model.)

To all whom, t may concern:

Beit known that I, LEWIS F. CALDWELL, a

citizen of the United States, residing at Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented a certain new anduseful Improvement in Window Fasteners and Retainers, of which thefollowing is a specification.

My invention relates to a new and useful improvement in window fastenersand retainers, and has for its object to provide an exceedingly simpleand eective arrangement of this description which when applied to awindow will permit the raising of the-window from the inside thereof andthe stopping of the 'same at any desired point without the use of ropesor weights, and when so secured it will be held against being raised orlowered except by the proper manipulation of the fasten-er; and afurther object of my invention is to so construct and arrange the deviceas to in no wise mar the appearance of the window or sash when appliedthereto nor interfere with surrounding objects.

With these endsin View this invention consists inthe details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claims.

In order that those skilled in the art to which this inventionappertains may understand ,how to make and use the same, theconstruction and operation will now be described in detail, referring tothe accompanying drawings, forming a part of this -specilication, inwhich- Figure l is a section of a portion of a, window-frame, showing myimprovement applied thereto and to the sash; Fig. 2, a horizontalcross-section of a portion of the sash and window-frame, taken throughthe fastener and clearly showing the position of Vthe parts thereof whenthe window is locked; and Fig.

3,v a similar View, but showing the parts of the fastener in theposition assumed when the sash is unlocked.l

In carrying out my invention as here embodied, A represents thewindow-frame, having the usual channel therein formed by theparting-strip B and stop-bead C. Within the channel is formed alongitudinal groove having set therein a rack-bar D, in which are formedsquare notches, for the purpose hereinafter set forth.

E represents the window-sash fitted to slide in the channels of thewindow-frame, and in the side rail thereof is formed a recess F for theaccommodation of the fastener G, the latpose of normally holding thebolt in its distended position, as shown in Fig. 2.

A thumb-lever M is ypivoted at N within a slot formed in the face-plateand has a ring O for convenience in manipulation, Yand this ring when inits normal position lies flush with the face-plate within the depressionH, so as to be out of the way and give a neat appearance to thecompleted device. formed upon its inner end a nose P, which projectsinto the slotQ in the bolt and is of such shape relative to said slot asto lock the bolt against independent movement when the lever is in itsnormal position, as clearly shown in Fig. 2, and yet serves to retractsaid bolt when the lever is swung outward, as shown in Fig. 3, by whicharrangement it will be seen that when the parts are in their normal po--sition the bolt cannot be retracted except by the proper manipulationof the lever; but when the bolt has been retracted and the le- Thethumb-lever has ver is released the spring L in forcing the bolt outwardwill also act to restore the lever to its normal position.

From the foregoing description it is obvious that when the window-sashis closed it will be securely locked as against'persons from theoutside, and yet the sash may be readily raised at any time by theswinging ofthe thumb- IOOl By the use of my improvement the use of ropesand weights is avoided, while the sash may be raised or lowered andsecured at any point.

-One of the advantages of my invention is that the fastener and rack-barare easily placed in position and the frame is entirely flush with theWindow-sash, While the latter is concealed from view when the sash isclosed and in no wise mars the appearance of the window.

The cost of m y improvement is exceedingly small relative to the cost ofweights and ropes and the application of the same to windows.

Having thus fully described my invention, what I claim as new and usefulisbl. In combination a rack-bar, a bolt adapted to engage the rack-barsaid bolt having a slot, a lever having a nose fitting in the slot andadapted to abut the bolt at each end of the slot to hold the boltagainst independent movement, and a guide-rod and spring for the bolt,substantially as described.

2. In combination with a rack-bar having square notches therein securedto the Windowfralne, a fastener consisting of a plate adapted to besecured to the sash, said plate having a depression therein, a boltIitted to slide upon the reverse side of the plate, alu g formed withthe plate, a rod arranged to slide in said lug, said rod being securedto the heel of the bolt, a spring coiled about the rod between the heelof the bolt and the lug, and a thumblever fitted Within the bolt andterminating in a nose which projects into they slot formed in the bolt,as specified.

3. A window fastener and stop consisting of a plate adapted to be set ina window-sash, said plate having a depression therein, a thumb-leverpivoted within the 'slot of said plate, a ring formed with the lever andadapted to lie within the depression so as to be flush with the plate, anose formed with said lever,

a 4bolt having a slot for the reception of the' nose of the lever, saidslot and nose being so formed relative to each other as to hold the boltagainst independent movement when in its normal position and retract thebolt when the lever is swung outward, a rod secured to the bolt andpassing through the lug, and a spring interposed between said `lugandthe heel of the bolt, as and for the purpose set forth. y

In testimony whereof l have hereunto affixed my signature in thepresence of two subscribing witnesses. l

LEWIS F. CALDWELL. WVitnesses:

JNO. I-I. CALDWELL, .I r.,

ANDREW SMITH.

